package com.example.ch09.sensor;

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Build;
import android.os.Bundle;
import android.view.WindowManager;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import com.example.ch09.R;

public class AccelerometerActivity extends AppCompatActivity implements
        SensorEventListener {
    private SensorManager mgr;
    private Sensor accelerometer;
    private TextView text;
    private int mRotation;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sensor_accelerometer);

        mgr = (SensorManager) this.getSystemService(SENSOR_SERVICE);

        accelerometer = mgr.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);

        text = (TextView) findViewById(R.id.text);

        WindowManager window = (WindowManager) this
                .getSystemService(WINDOW_SERVICE);
        int apiLevel = Integer.parseInt(Build.VERSION.SDK);
        // Toast.makeText(this, "API level is " + apiLevel,
        // Toast.LENGTH_LONG).show();
        if (apiLevel < 8) {
            mRotation = window.getDefaultDisplay().getOrientation();
        } else {
            mRotation = window.getDefaultDisplay().getRotation();
        }
    }

    @Override
    protected void onResume() {
        mgr.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_UI);
        super.onResume();
    }

    @Override
    protected void onPause() {
        mgr.unregisterListener(this, accelerometer);
        super.onPause();
    }

    public void onAccuracyChanged(Sensor sensor, int accuracy) {
        // ignore
    }

    public void onSensorChanged(SensorEvent event) {
        String msg = String.format(
                "X: %8.4f\nY: %8.4f\nZ: %8.4f\nRotation: %d", event.values[0],
                event.values[1], event.values[2], mRotation);
        text.setText(msg);
        text.invalidate();
    }
}